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Finding the Fourth Proportional to 578,988, 799,003.44 and 324,339.12

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Solution

The fourth proportional to 578,988, 799,003.44 and 324,339.12 is: 447,587.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,988 : 799,003.44 = 324,339.12 : x
  2. Step 2: Convert to fraction form
    578,988/799,003.44 = 324,339.12/x
  3. Step 3: Cross multiply
    578,988x = 799,003.44 × 324,339.12
  4. Step 4: Simplify right side
    578,988x = 259,148,072,606.57
  5. Step 5: Solve for x
    x = 259,148,072,606.57/578,988
  6. Step 6: Final answer
    x = 447,587.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.